VADA VFB-S75, Руководство по установке

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There may be debris caught within the first
impeller not allowing pressure to be created:
1. Disassemble pipework and pump housing.
2. Clean impellers.
It is recommended to call a pump
technician or licensed professional.
The system may have a large pipe
network to charge and the pump is
running high flow with no pressure.
1. Close the isolating valve on the
discharge line to almost 90% closed.
2. Restart to ensure the pump has head
pressure and fills the line slowly.
The Digital Water
Switching Unit has
gone into “loss of
prime” (no water
is being delivered
to pump).
* Only applicable if
application is using
a digital water switch.
The pump may
have failed to prime
(i.e. the tank is
empty, no water is
being detected). Once the tank has filled with water
to an adequate level prime the pump
and press the ‘Reset’ button.
The valve on or
between tank and
switching unit inlet
may be closed. Open the isolating valve on the suction line
between the tank and switching unit.
The mesh filter in
the water switching
unit is blocked. 1. Switch off power to the unit.
2. Isolate the water lines and remove
the pump barrel union.
3. Inspect/clean/replace the
switching unit mesh filter.
No water is delivered
from mains.
* Only applicable if
application is using a
water switch device.
There may be no
mains water available. Check the isolation valve on the water meter.
There may be
debris caught in
the mechanical
switching valve.
* Only applicable
if application is
using a mechanical
water switch.
If a mechanical switching valve is
installed, open the bleed plug.
45
SYMPTOM CAUSE SOLUTION